From: Jarkko Nikula <jarkko.nik...@linux.intel.com>
Simplifies the code a bit and makes easier to disable PCI device on driver
detach by removing the pcim_pin_device() call in the future if needed.
Reason why i2c-i801.c doesn't ever call pci_disable_device() was because it
made some systems to hang during power-off. See commit d6fcb3b9cf77
("[PATCH] i2c-i801.c: don't pci_disable_device() after it was just enabled")
and
http://marc.info/?l=linux-kernel&m=115160053309535&w=2
Signed-off-by: Jarkko Nikula <jarkko.nik...@linux.intel.com>
Reviewed-by: Jean Delvare <jdelv...@suse.de>
Signed-off-by: Wolfram Sang <w...@the-dreams.de>
(cherry picked from commit fef220da43d8537ed7d11da4db17b958cd779887)
Signed-off-by: Ng Wei Tee <wei.tee...@intel.com>
---
drivers/i2c/busses/i2c-i801.c | 25 +++++++++----------------
1 file changed, 9 insertions(+), 16 deletions(-)
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 5fb3546..5ecbb3f 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -1180,35 +1180,35 @@ static int i801_probe(struct pci_dev *dev, const struct
pci_device_id *id)
}
priv->features &= ~disable_features;
- err = pci_enable_device(dev);
+ err = pcim_enable_device(dev);
if (err) {
dev_err(&dev->dev, "Failed to enable SMBus PCI device (%d)\n",
err);
- goto exit;
+ return err;
}
+ pcim_pin_device(dev);
/* Determine the address of the SMBus area */
priv->smba = pci_resource_start(dev, SMBBAR);
if (!priv->smba) {
dev_err(&dev->dev,
"SMBus base address uninitialized, upgrade BIOS\n");
- err = -ENODEV;
- goto exit;
+ return -ENODEV;
}
err = acpi_check_resource_conflict(&dev->resource[SMBBAR]);
if (err) {
- err = -ENODEV;
- goto exit;
+ return -ENODEV;
}
- err = pci_request_region(dev, SMBBAR, dev_driver_string(&dev->dev));
+ err = pcim_iomap_regions(dev, 1 << SMBBAR,
+ dev_driver_string(&dev->dev));
if (err) {
dev_err(&dev->dev,
"Failed to request SMBus region 0x%lx-0x%Lx\n",
priv->smba,
(unsigned long long)pci_resource_end(dev, SMBBAR));
- goto exit;
+ return err;
}
pci_read_config_byte(priv->pci_dev, SMBHSTCFG, &temp);
@@ -1276,7 +1276,7 @@ static int i801_probe(struct pci_dev *dev, const struct
pci_device_id *id)
err = i2c_add_adapter(&priv->adapter);
if (err) {
dev_err(&dev->dev, "Failed to add SMBus adapter\n");
- goto exit_release;
+ return err;
}
i801_probe_optional_slaves(priv);
@@ -1286,11 +1286,6 @@ static int i801_probe(struct pci_dev *dev, const struct
pci_device_id *id)
pci_set_drvdata(dev, priv);
return 0;
-
-exit_release:
- pci_release_region(dev, SMBBAR);
-exit:
- return err;
}
static void i801_remove(struct pci_dev *dev)
@@ -1301,8 +1296,6 @@ static void i801_remove(struct pci_dev *dev)
i2c_del_adapter(&priv->adapter);
pci_write_config_byte(dev, SMBHSTCFG, priv->original_hstcfg);
- pci_release_region(dev, SMBBAR);
-
/*
* do not call pci_disable_device(dev) since it can cause hard hangs on
* some systems during power-off (eg. Fujitsu-Siemens Lifebook E8010)
--
1.7.9.5
--
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